During the embryonic period:
A) the zygote becomes implanted on the mother's uterine wall.
B) the fetus can move its arms, legs, mouth, and head.
C) the mother experiences quickening.
D) all of the organs and the major body systems form.

Question

Quizplus · Accepted Answer

During the embryonic period, which lasts from fertilization to the end of the eighth week of development, all of the major organs and body systems (such as the heart, liver, and nervous system) form. Implantation on the uterine wall typically occurs within the first week after fertilization, but movements by the fetus (such as quickening) do not occur until the fetal period (after the eighth week).

During the Embryonic Period